Catalytic growth of bamboo-like boron nitride nanotubes using self-propagation high temperature synthesized porous precursor
| Autor: | Guowei Zhao, Laiping Zhang, Zhanhui Zhang, Qiongli Qian, Jie Li, Xinye Pan, Yunle Gu, Jilin Wang |
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| Rok vydání: | 2012 |
| Předmět: |
Nanotube
Materials science Annealing (metallurgy) Mechanical Engineering Nanoparticle Nanotechnology Chemical vapor deposition Condensed Matter Physics symbols.namesake chemistry.chemical_compound Chemical engineering chemistry Mechanics of Materials Boron nitride symbols General Materials Science Fourier transform infrared spectroscopy Raman spectroscopy High-resolution transmission electron microscopy |
| Zdroj: | Materials Letters. 67:17-20 |
| ISSN: | 0167-577X |
| Popis: | The high-pure bamboo-like boron nitride (BN) nanotubes with high yield were synthesized via an effective chemical vapor deposition method by annealing porous precursor under NH 3 atmosphere at 1150 °C. The porous precursor was readily prepared by self-propagation high temperature synthesis (SHS) method. The as-synthesized BN nanotubes were characterized by SEM, TEM, HRTEM, XRD, Raman and FTIR spectroscopy. The results indicate these nanotubes have bamboo-like structures with an average diameter of about 90 nm and length of more than 10 μm. Nanotube content is estimated as approximately 90 wt.% according to the statistical analyses by SEM and TEM. Moreover, the reaction mechanism for the as-synthesized BN nanotubes is proposed. |
| Databáze: | OpenAIRE |
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